<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<script>
    alert('平安喜乐 万事顺逐')
    document.write('沉默是今晚的康桥...')
    console.log('浏览器控制台输出...')
    prompt('请输入你的年龄:')
</script>
</body>
</html>